The Energy and Atmosphere Credit, Existing Building Commissioning - Analysis, Option 1 in LEED AP O+M V4.1 requires the commissioning of major energy-using systems1. In a district energy system that provides chilled and hot water to a building, the heat exchangers play a crucial role in transferring heat between the hot and chilled water circuits. Therefore, to meet the requirements of this credit, the heat exchangers must be commissioned to ensure they are operating efficiently and effectively1.
References: LEED AP O+M Exam, USGBC Guide, Lawrence Berkeley National Laboratory, Department of Energy.